I have a HTML problem.

I am supposed to attach the following information on a form string:

http://www.bchdigital.com/scripts/se...&message=test2

The number XXXXXXX is supposed to be replaced with a normal mobile number.

What I need to have is a field within the form where I can enter a mobile number of my choice...what I want is the form string to take this entered number and replace the XXXXXX with this number. So basically, someone goes to the form, enters their own number and this said number is used when the server sends out a text message.

Any assistance would be appreciated.